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Glenohumeral Motion After Complete Capsular Release

Moskal, Michael J. ; Harryman, Douglas T. ; Romeo, Anthony A. ; Rhee, Yong-Girl ; Sidles, John A.

Arthroscopy, 1999-05, Vol.15 (4), p.408-416 [Periódico revisado por pares]

Philadelphia, PA: Elsevier Inc

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  • Título:
    Glenohumeral Motion After Complete Capsular Release
  • Autor: Moskal, Michael J. ; Harryman, Douglas T. ; Romeo, Anthony A. ; Rhee, Yong-Girl ; Sidles, John A.
  • Assuntos: Biological and medical sciences ; Cadaver ; Capsular release ; Elasticity ; Elevation ; Glenohumeral rotation ; Humans ; Joint Capsule - physiology ; Joint Capsule - surgery ; Medical sciences ; Range of Motion, Articular ; Shoulder Joint - physiology ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Technology. Biomaterials. Equipments ; Translation
  • É parte de: Arthroscopy, 1999-05, Vol.15 (4), p.408-416
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: The range of glenohumeral motion is primarily limited by the joint capsule. If the capsule is contracted, greater restriction in glenohumeral motion is exhibited. Release of a tight capsule has been an effective means of managing refractory stiffness of the glenohumeral joint. The effect of a complete capsular release on glenohumeral kinematics has not been previously studied in a cadaver model. Elevation, rotation, and translation of eight cadaveric glenohumeral preparations were studied before and after complete capsular release. As the intact joint was positioned near the limits of motion, glenohumeral torque rose rapidly with relatively small concomitant increases in elevation and rotational angles. Notable torque, due to tension in the capsule or cuff, ensued only after glenohumeral elevation reached approximately 80% of maximal range. After complete capsular release, maximal elevation increased on average 15%, yet retained definitive endpoints due to residual tension in the rotator cuff. Axial humeral rotation with an intact capsule decreased as maximum elevation approached, especially at elevation angles greater than 60°. Maximum internal rotation was less than external, for all planes except +90°. After complete capsular release, the greatest net gains for external rotation tended to be in the posterior scapular planes, whereas gains for internal rotation tended to be in the anterior scapular planes. Maximal translation in an intact vented capsule was 21 mm, 14 mm, and 15 mm in the anterior, posterior, and inferior directions, respectively. After complete capsular release, translation increased in all positions with maximal anterior, posterior, and inferior translations of 28 mm, 25 mm, and 28 mm, respectively. In general, relative gains in translation were greater in planes posterior to the scapula and at extremes of the range of motion. Although large glenohumeral translations were measured, no preparation could be dislocated before or after complete capsular release. Complete capsular release significantly increased glenohumeral range of motion and translation. The intact rotator cuff myotendinous units serves to limit the range of motion and translation after all capsuloligamentous attachments are rendered incompetent by complete capsular release. Arthroscopy: The Journal of Arthroscopic and Related Surgery, Vol 15, No 4 (May-June), 1999: pp 408–416
  • Editor: Philadelphia, PA: Elsevier Inc
  • Idioma: Inglês
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